![Giovanni's Nidoqueen [1st Edition] #23](https://storage.googleapis.com/images.pricecharting.com/601117c39c9d13a3018f7f63ba573af8d5e95e226400fc4541b3c7aba65f8e43/1600.jpg)
Pokemon Gym Challenge · #23 · Oct 2000
Should You Grade?
This card has strong grading potential — $188.42 profit if PSA 10 with a 33% gem rate and 121 annual sales. The market is liquid enough to sell quickly.
Factors in grading cost, turnaround time, and compounding — how fast you can reinvest profits into the next flip.
Shows the best-value tier from each grading company based on EV, cost, and turnaround. Pop = total graded population; 10s = grade 10 count.